Merge branch 'aarch64-base' into 'aarch64-rebase'

src/arch/aarch64/init/pre_kstart/helpers/vectors.S

src/arch/aarch64/interrupt/exception.rs

src/arch/aarch64/interrupt/handler.rs

src/arch/aarch64/interrupt/mod.rs

src/arch/aarch64/interrupt/syscall.rs

src/arch/aarch64/interrupt/unhandled_exceptions.rs

src/context/arch/aarch64.rs

src/syscall/process.rs